Continuous bag making machine



H. E. KASTING ETAL CONTINUOUS BAG MAKING MACHINE Oct. 10, 1967 27 Sheets-Sheet 1 Filed Feb. 18, 1965 INVENTORS HOWARD E. KAST/NG JOH P SAC 5 ATTORNEY Oct. 10,1967 i-i. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 INTERNAL MANDREL Clamping roll carriage 27 Sheets-Sheet 2 INTERNAL MANDREL Clamping roll carriage S ATION II Blanking,form 8. seal bottom 8. transfer through movable clamp.

Indexing table STATION III Spread open flaps insert valve film primary seal.

10 106 egg STATION I a Blanking form &

I 104 seal botiom & transfer through movable clamp.

J 800 PM STATION 1 Clamping platen open -discharge finished bag.

' voo GRIPPER ASSEMBLY Transfer finished bottom tension length control strip internal hinged leaves from bottom closure.

During 90 index withdraw forming platen During 90 lndex insert forming platen STATION 1V Foldover side Flaps heat seal Top closure.

INVENTORS. HOWARD 5. KAST/NG JO /v P. SACQS ATTORNEY Oct. 10,1967 KASTING A 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 3 lNVENTOR-S. HOWARD E. KAST/NG JOHN R SACHS A 7'TORNEV CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 4 INVENTORS. HOWARD E. KAS ING JOHN P. SACHS BYv ATTORN EY Uci. 10,1967 H. E. KASTiNG ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 .27 Sheets-Sheet 5 4 m m 4 O m n 6 w 2 O 4 w 0 7 @y 0 HQMIEUHMHWHWHW! W 4 O 7 M W 2 W.

Oct- 10,1967 H. E. KASTING ETAL 3,

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 heets-Sheet e INVENTORS. HOWA RD 5. ms mva M JOH P. SACHS ATTORNEY 27 Sheets-Sheet 8 Filed Feb. is, 1965' INVENTORS HOWA R0 5.. msn/va JOHN P. $A s BY 2 ATTORNEY Oct. 10,1967 H. E. KASTING ETAL 3,

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 10 INVENTORS. HOWA n0 5. vms TING JOH P. SAC 5 ATTORNEY Oct. 10,1967 KASTlNG ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE 27 Sheets Sheet 11 Filed Feb. 18, 1965 Oct. 10,1967 s'n ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 12 INVENTORS. HOWARD E.-/(A57'/NG JOH P. SAC 5 ATTORNEY Oct. 10,1967 H. EKASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. l8; 1965 27 Sheets-Sheet 13 INN Imp I INVENTORS. HOWARD E. KAST/NG JOHN P. SACHS ATTORNEY Oct. 10,1967 H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE 7 Filed Feb. 18, 1965 27 Sheets-Sheet 14 $74 now E INVENTORS.

HOW/I RD E. KAST/NG JOHN P. SACHS ATTORNEY ,1967 v H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet l5 INVENTORS. HOWARD 5. ms T/NG 716 JO N P. SA H ATTORNEY Oct. 10,1967

H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet l6 INVENTORS. HOWA RD E. KAST/NG P. HS JOH 775146 ATTORNEY Oct. 10,1967 H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 17 INVENTORS. HOWARD E. KAST/NG YJOH/V P. 5 4 H ATTORNEY 10,1967 H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE 27 SheetsSheet 18 Filed Feb. 18, 1965 INVENTORS.

HOWA no 5. KAST/NG JOHN P. SACHS 4 ATTORNEY Oct. 10,1967 KA$T|NG A 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 Sheets-Sheet 19 INVENTORS. HOWARD E. KAST/NG JOHN P. ACHS 2 ATTORNEV 10,1967 H. E. KASTING ETAL 3,345,919

CONTINUOUS BAG MAKING MACHINE Filed Feb. 18, 1965 27 tsh t 20 INVENTORS. HOWARD E. KAST/NG BYJOHN P. 5/1 CH8 ATTORN EY 

1. AN APPARATUS FOR CONTINUOUSLY MAKING INDUSTRIAL SHIPPING BAGS HAVING LAPPED, HEAT-SEALED END CLOSURES WHICH COMPRISES, IN COMBINATION: (A) A FEED MECHANISM FOR SUPPLYING A CONTINUOUS WEB OF FLATTENED, TUBULAR THERMOPLASTIC FILM; (B) MEANS FOR DISPOSING AN INTERNAL MANDREL WORKPIECE WITHIN SAID FLATTENED TUBULAR FILM; (C) MEANS FOR FIXEDLY SECURING THE INTERNAL MANDREL WITHIN THE FLATTENED TUBULAR FILM; (D) MEANS FOR SEVERING THE TUBULAR FILM SIMULTANEOUSLY BLANKING A TOP CLOSURE AND BOTTOM CLOSURE; (E) MEANS FOR INFOLDING A PAIR OF OPPOSED END TABS IN THE BLANKED END OF THE TUBULAR FILM; (F) MEANS FOR ROTATING THE BLANKED TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL THROUGH A PREDETERMINED ARC; (G) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE BLANKED END OF THE TUBULAR FILM DURING ITS ROTATION; (H) MEANS FOR SEALING A FIRST RECTANGULAR CLOSURE IN THE BLANKED END OF THE TUBULAR FILM AT THE EXTREMITY OF THE ROTATIONAL ARC; (I) MEANS FOR COUNTER-ROTATING THE TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL; (J) MEANS FOR DISPLACING THE THUSLY BLANKED TUBULAR FILM RELATIVE TO THE INTERNAL MANDREL ALONG THE LONGITUDINAL AXIS OF SAID BLANKED TUBULAR FILM; (K)D MEANS FOR SECURING THE DISPLACED BLANKED TUBULAR FILM IN CONVEYING MEANS; (L) MEANS FOR OUTFOLDING A PAIR OF OPPOSED SIDE FLAPS AND INFOLDING A PAIR OF OPPOSED END TABS AND TEMPORARILY RETAINING SAID FLAPS IN THIS POSITION IN THE CONVEYING MEANS; (M) MEANS FOR DISPOSING A FLAT FORMING PLATEN IN THE BLANKED END OF THE THUSLY SECURED TUBULAR FILM; (N) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE THUSLY END OF THE TUBULAR FILM; (O) MEANS FOR SEALING A SECOND RECTANGULAR CLOSURE IN SAID THUSLY BLANKED END OF THE TUBULAR FILM; (P) MEANS FOR WITHDRAWING THE FLAT FORMING PLATEN FROM THE SECOND SEALED RECTANGULAR CLOSURE; AND (Q) MEANS FOR REMOVING THE COMPLETED SHIPPING BAG FROM THE CONVEYING MEANS. 